Neat! I hope this goes far, it'd be great to have a faster/lighterweight Elastcsearch.

Something similar I'm really hoping to see is Tantivy in a Postgres extension, so I can stop playing the game of trying to keep my search engine and database in sync. Seeing pg-extend-rs (https://github.com/bluejekyll/pg-extend-rs) on HN the other week got me thinking about it again. Does anyone know whether this is feasible or if anyone is working on something in this vein?

ZoomDB (https://github.com/zombodb/zombodb) offers something like this.